Oil-well drill.



W. S. LAWS. yolL WELL DRILL.

APPLlCATION FILED OCT. 9 1914. RENEWED FEB. 1.1916.

Patented Mar. 7, 1916.

Arron/VHS UMTED sTAtrEs rATENT OFFICE.

WINFIELI)I S. LAWS, OF (,'US//HIINGg OKLAHOMA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OIF,y SEVEN-SIXTEENTHS TQ MILTON T. WILLIAMS AND TWO- SIXTEENTHS T MILD ORLANDO CANNADA, BOTH OF CUSHING, OKLAHOMA.

OIL-WELL DRILL.

Specification of Letters Patent.-

Patented Mar. 7,1916.

- Application iled October 9, 1914, Serial No. 865,822. Renewed February 1, 1916. lSerial No. 75,623.'

To all whom it may concern.'

Be it known that I, WINFIELD S. LAws, a

' citizen of the United States, residing at- Cushing, in the county of Payne and btate of Oklahoma, have invented certain new and useful Improvements' in Oil-Well Drills, of which the following is a specication. n

This invention relates to oil well boring drills.

One of .the principal objects of the invention is to provide a drillas set forth with means forpreventing the drill bit from -loosening in the well, said means adaptedto act as a ycore -or lock whereby the drill stem andjar may be raised from the well should they become broken.

Another object of the Ainvention is to provide`a well boring drill with a core or lock in the form of a cable or rod, connected at its lower end to the drill bit-and at its upper end having a loose connection with the drill jar, means being provided for locking the cable or= rod againstrotation relativel to :She jar whereby to prevent loosening of the A further object of the invention 4is to provide a device of the class described which will be simple, durable, eiiicient in operation and inexpensive to manufacture.

.With these and, other. objects in view which will become apparent as the description proceeds, the inventionresides 1n the:

construction, combination and. arrangement of parts, hereinafter more fully described and claimed, and illustrated inthe accom-A panying drawing, in which like characters of reference indicate like lparts throughout the several figures, of which- -Figure 1. represents a longitudinal central sectional view of ,a drill constructed according to myinvention. Fig. 2 represents a detail perspective View of the upper portion ofthe drill jar. Figi?) represents a central sectional view thereof.v F ig. 4: rep- 'resents arperspective view of the cover plates or doors in separated position. Fig. 5 represents a side elevational view of the upper portion of the'lock or core, and Fig. 6 represents a detail central sectional view of the lower portion of the drill showing the connection of the drill stem and bit.

Referring more particularly to the drawing 5 indicates the drill stem, which is V-hol- A of stem 5.

low, and 6 indicates the drill bit. latter 1s threaded at its upper end at 7'for the receptlon of the lower end ofan interiorly left hand threaded sleeve 8. The upper end o f sleeve 8 screws onto the left hand exteriorly threaded portion 9 at the lower end The bit is provided with an axiall right hand threaded lug 10 which screws into. a socket 11 at the lower end of the stem. l

The'core or lock is indicated at 12, and

.may be in the form'of arod or suitable cable. .The core includes an upper section 13 u hich is flattened, a central section 14, and. a lower section 15. The r4upper and lower sections are preferably in the form of metallic rods, while the central section 14 may be either in the form of a rod or cable.y The lower section 15 of the core or lock extendslaxially of the drill bit 6 and projects above the upper end of the latter,

and at its lower'end is anchored and rabbeted in the bit as at 16. The upper end of section 15, extends through lug 10 and upper end of the drill stem` and the drill a jar y20 is adapted to reciprocate at its lower` end within the coupling for imparting the desired movement to the drill. Said coupling is provided with longitudinal slots 21 to allow the escape of water whereby the movements of the jar will not be retarded. The' core or lock extends upwardly through the stem and the couj'vlng and the jar.

Jar 20 is provided at its upper end,with a larger loop 22, to which the motive power is suitably connected in any well known manner. A pair of circular door plates or covers 23 and 24 of which the former is the upper and the latter the lower respectively, are hingedlyconnected each to one4 arm of loop 2.2'by ,means of a staple 25 in the manner indicated in Fig. 2. The diamveter of the cover plates is substantially equal to that of the drill jar, and said plates are adapted to be swung upon the arms of loop disposed in locked position.

= core or lock relatively to the drill.

` within loop 22.

32 whereby to either dispose them in the relative position shown inA Fig. 2 or to swing them outwardly from the top of the jar. As indicated the cover plates are each pivoted with a slot 26 extending in a radial direction from the periphery to a point slightly beyond the center of the plate. The slots when the plates are in relative position indicated in Figs. 2 and 4 extend in opposite directions, and said slots are adapted to embrace. the i'iattened or squared portion or member 13 of the core or lock, when the plates are in the. position shown in Figs. 2 and 23, whereby to prevent rotation of the The upper plate is provided with diametrically opposed upwardly extending lu'gs 27, one of which is positioned adjacent the staple 25 carried b v said plate, and the. lower plate 24 is also provided with a similar pair of lugs 2S. Plate adjacent lugs 27 is slotted as at 21). and through these slots the lugs 2S ma v he projected when the plates are being Lugs 2T and lo are provided with openings 30 adapted to be brought into registration with each other whereby wires or similar. keys 31 may be passed through the openings for maintainin er the covers in locked position.

.Year the upper end of section 13 of the core or lock, a cross bar or stop 32 is carried. and when the cover plates are in locked position extends across the uppermost of said plates. A smaller loop 33 `is carried b v the cross bar or stop ,32, and is disposed The relative lengths of the loops is such that reciprocation of the drill jar will not cause the engagement or the interference of one of the loops with the other. In disposing the cover plates in the position shown in Fig. 2 the jar is lowered relatively to the Core or the core is raised relatively to the jar so Vthat cross bar 32 will be in spaced relation with the cover plates, and the lowermost plate is then swung across to cover the jar, the slot in the lower plate travelingover'the squared portion of the core during this operation. The upper plate is then swung across and is lowered upon the lower plate so that the slots 29 pass over lugs 28carried by said lower plate, and the keys or wires may then be put in place.

Should any of the portions or parts of the drill break or become disabled during the operation of the drill, the loop 33 will serve as means by which 'the tools may be recovered and Withdrawn from the well. The engagement of the squared portion of the core in the slots provided in the cover sov plates, will prevent rotary movement of the rbut* relativelyY to the core, thus insuring the bodily rotation of the'core and bitA during tiu` loperation of drilling the well. The de- .vice will serve to lock the stem, bit and jar against relative rotation, thus reducing to a minimum the dangcr'of loss of the drill bit from the stem and also acts as a means' by which any of the string of tools which might become broken may be bodily lifted from the well without danger of loss of any of the tools from the string.

The device is simple in construction and may be quickly attached and detached.

Although I have described the preferred embodiment of my invention, I may desire to make su'ch changes in the construction, combination and arrangement of parts thereof as do not depart from the spirit of the invention and the scope of the appended claims.

I claimz 1. The combination with a drill stem, of a drill bit detachably connected thereto, and a drill jar for the stem, of a core secured to said bit against rotary movement relatively thereto, said core extending through said stem and jar, and having a squared portion disposed wit-hin the jar, a pair of doors hingedly connected to said jar at the upper end thereof and adapted to fold over the jar one above the other, said doors' provided with oppositely disposed slots adapted t0 engage over the squared portion of the core to prevent relative rotation of said jar and core, a stop provided on said core above the doors, a loop provided on the stop, a larger loop provided on the jar within which said first loop is adapted to be disposed, and means for locking the doors together.

2. The combination with a drill stem, a drill bit removably secured thereto and a jar for the stem, ofa core secured to said bit against rotation relatively thereto, said core extending through said stem and jar and being provided with a flattened portion, a pair of doors hingedly connected to said jar and adapted to fold over the upper end thereof one above the other, said doors provided with oppositely extending slots adapted to engage over. the flattened portion of the core for preventing relative rotary movement of the jar and core, means provided on the core above the doors for limiting the movement of the jar relative to the core, and means provided on said core whereby the latter may be engaged for and means carried by the core whereby the same may be engaged by alifting element. 4. The combination with' a drill stem, a

.bit removably secured thereto, anda jar for the stem, of a core connected to the bit against rotary movement relatively thereto, and interlocking means between the jar and core adapted to prevent rotary relative movement of the same, and adapted to allow longitudinal movement of the same, substantially as described.

5. The combination of a drill tsem, a bit removably secured thereto, a jar for the stem, a core connected to the bit against rotary movement relatively thereto, said core extending through said stem and jar and having a flattened portion, means carried by the jar and adapted to engage the flattened portion of the core to prevent rotary movement of the jar relatively to the core, and adapted to allow longitudinal movement 'of the jar relatively to the core, in one direction.

' 6. The combination with a drill stem, a bit removably secured thereto and a jar for the stem, of means for locking said jar and bit against relatlve rotary movement, said means adapted to allow longitudinal movement of the iar relative to the stem.

7. A device of the class described including a drill jar, and a core, and means for locking said jar against rotation relatively to the core, said means comprising a pair of hinged plates adapted to be disposed ing a drill jar and a core disposed therein,.`

said core having a drill bit connected therewith, coperating means between the jar' and core adapted to prevent rotary move-- ment of the jar and core relatively to each' other and adapted to allow longitudinal movement of them relatively to each other, and means carried by the core adapted to limit the movement of the jar and core in one direction.

9. A device of the class described including a drill jar, a core disposed therein, said core having'a drill bit associated therewith, coperating means between the jar and core for allowing of relatively longitudinal movement of them and Jfor preventing relative rotary movement of them, means for limiting the relatively longitudinal movement in one direction, and means adapted to allow the engagement of a'lifting element with the core.v

WINFIELD s; LAWS.

Witnesses:

JOHN L. AsKIN, L. G. WHEELER. 

